TY  - JOUR
AU  - Kangas, T
AU  - Mattila, S
AU  - Kankare, E
AU  - Lundqvist, P
AU  - Väisänen, P
AU  - Childress, M
AU  - Pignata, G
AU  - McCully, C
AU  - Valenti, S
AU  - Vinkó, József
AU  - Pastorello, A
AU  - Elias-Rosa, N
AU  - Fraser, M
AU  - Gal-Yam, A
AU  - Kotak, R
AU  - Kotilainen, J K
AU  - Smartt, S J
AU  - Galbany, L
AU  - Harmanen, J
AU  - Howell, D A
AU  - Inserra, C
AU  - Marion, G H
AU  - Quimby, R M
AU  - Silverman, J M
AU  - Szalai, Tamás
AU  - Wheeler, J C
AU  - Ashall, C
AU  - Benetti, S
AU  - Romero-Cañizales, C
AU  - Smith, K W
AU  - Sullivan, M
AU  - Takáts, K
AU  - Young, D R
TI  - Supernova 2013fc in a circumnuclear ring of a luminous infrared galaxy: the big brother of SN 1998S
JF  - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
J2  - MON NOT R ASTRON SOC
VL  - 456
PY  - 2016
SP  - 323
EP  - 346
PG  - 24
SN  - 0035-8711
DO  - 10.1093/mnras/stv2567
UR  - https://m2.mtmt.hu/api/publication/2990117
ID  - 2990117
AB  - We present photometric and spectroscopic observations of SN 2013fc, a bright type II supernova (SN) in a circumnuclear star-forming ring in the luminous infrared galaxy ESO 154-G010, observed as part of the Public ESO Spectroscopic Survey of Transient Objects. SN 2013fc is both photometrically and spectroscopically similar to the well-studied type IIn SN 1998S and to the bright type II-L SN 1979C. It exhibits an initial linear decline, followed by a short plateau phase and a tail phase with a decline too fast for <SUP>56</SUP>Co decay with full γ-ray trapping. Initially, the spectrum was blue and featureless. Later on, a strong broad (˜8000 km s<SUP>-1</SUP>) H α emission profile became prominent. We apply a STARLIGHT stellar population model fit to the SN location (observed when the SN had faded) to estimate a high extinction of A<SUB>V</SUB> = 2.9 ± 0.2 mag and an age of 10_{-2}^{+3} Myr for the underlying cluster. We compare the SN to SNe 1998S and 1979C and discuss its possible progenitor star considering the similarities to these events. With a peak brightness of B = -20.46 ± 0.21 mag, SN 2013fc is 0.9 mag brighter than SN 1998S and of comparable brightness to SN 1979C. We suggest that SN 2013fc was consistent with a massive red supergiant (RSG) progenitor. Recent mass loss probably due to a strong RSG wind created the circumstellar matter illuminated through its interaction with the SN ejecta. We also observe a near-infrared excess, possibly due to newly condensed dust.
LA  - English
DB  - MTMT
ER  -